Though we are sitting on the beta version of iOS 12, therefore it’s a good idea to perform a clean install of the software if you are looking to get the most out of it in terms of performance. At this point, every ounce of performance helps, especially if you are an enthusiast and happen to be using the software as a daily driver, something which we don’t recommend at all when it comes to beta software.

Sign up to Apple’s Developer Program

First and foremost, you can only download iOS 12 Beta if you are enrolled in Apple’s Developer Program. If you aren’t already, you may want to sign up by going over to this link. Remember, it will cost you $99 on an yearly basis, but you end up with access to every beta software currently in Apple’s roster.

Download iOS 12 Beta IPSW for Clean Install

Once you are all set and signed into Apple’s Developer Program, follow the steps outlined below.

Click on Download under the Additional Resources heading on the left.

Under Featured Downloads, find iOS 12.

Click on the iOS Restore Images option and download the file that is meant for your device. Please don’t get this wrong.

Save the IPSW file onto your desktop.

Clean Install iOS 12 Beta Using iTunes

Assuming you’ve already backed up your device at this point either using iTunes or iCloud, follow the steps outlined below. Also, please make sure Xcode is installed onto your Mac before proceeding. It’s a requirement, otherwise you will be forced to install iOS 12 Beta over the air only.